.contenedor{
    width:90%;
    max-width: 1000px;
    margin: 0 auto;
}

#iframe{
    width:50%;
    height:50%;
    max-width: 1000px;
    max-height: 1000px;
    margin-left: auto;
}

body,input{
	font:13px arial,
	helvetica,
	clean,
	sans-serif;
	font-size:small; 
	background: Aliceblue;
}
#titulotabla{
    text-align: middle;
    vertical-align: middle;
    width: 100%; 
    background: blue;
    color: white;
    height: auto;
    border-radius: 5px;

        box-shadow: 
        0 0 1px rgba(0, 0, 0, 0.3), 
        0 3px 7px rgba(0, 0, 0, 0.3), 
        inset 0 1px rgba(200,200,200,1),
        inset 0 -3px 2px rgba(225,225,255,0.25);
    border-radius: 5px;
    background: linear-gradient(#eeefef, #000fff 20%);
    position: relative;
}

#cabecera{
    width: 100%;
    margin: 1% auto;
    padding: 0%;
    position: relative;
}

table{
    width: 30%;
    margin: 10% auto;
    margin-left: 10% auto;
    padding: 10px;
    position: relative;
    margin-top: auto;

    box-shadow: 
        0 0 1px rgba(0, 0, 0, 0.3), 
        0 3px 7px rgba(0, 0, 0, 0.3), 
        inset 0 1px rgba(255,255,255,1),
        inset 0 -3px 2px rgba(0,0,0,0.25);
    border-radius: 5px;
    background: linear-gradient(#eeefef, #ffffff 10%);
    position: relative;
}